Improvement in rotary heels for boots and shoes



, A. o. came.

Rotry Heels forV Boots and Shoes. No.124,723.

Inventor.

v Patented M`arch19, 1872.

maining curvilinear. t into al corresponding mortise cut through UNrrEn S'rA'rEs PATENT OFFICE.

ALBERT o.' oEANE, or BOSTON, M AssAoHusE'rrs.

Specification forming part of Letters' PatentNo. 124,723, dated March `19, 1.872.

1, ALBERT O. CRANE, of the city of Boston, in the State of Massachusetts, have invented certain Improvements in Rotary Heels for Boots and Shoes, of which the following is a specification z My improvements are particularly applicable to the kind of rotary heel described or referred to in former Letters Patent granted to me, and numbered 84,861 and 115,581. Such heels are commonly made intwo parts, the one part, of leather, fastened directly upon the sole of the shoe in the ordinary manner, and remaining stationary there, is called the heel-seat; the other, called the tread-part,7 is made of a compound of which India rubber or other similar material is'the principal ingredient, and molded into form, and `is so attached to the former that it may be revolved at pleasure. The first part of my invention consists in a modification of the conical stud upon which the tread-part of the heel revolves, described in my former patent, No'. 84,861. In the stud as modified I dispense with the points or projections upon the stud, which in my former invention were designed to enter the sole or heel-seat of the shoe when the stud was screwed down, and I mold the small end of the stud in the form of a tenon, two opposite sides of which are straight, the other sides re- This tenon is formed to the center of a metallic plate or disk about one-twentieth of an inch thick,which is nailed upon the face of the heelseat, and thus 'the stud is held stationary when the tread-part of lthe heel is revolved upon it, the tenon, when in the mortise, serving the same purpose that the points or projections upon the stud in my former invention did when inserted in the leather of the heel-seat. The second part of my invention consists in the use of the metallic plate or disk above referred to. This plate is circular, and from about three-eighths of an inch to an inch less in diameter than the di ameter of the face of the heel-seat, according to the size of the heel. It is cut with dies, readily Aand cheaply, from sheet metal about one-twentieth of an inch in thickness; at the same time the mortise, corresponding in size and form to the tenon on the stud already de scribed, is cut centrally through the plate. From four to six nail-holes are also punched through the plate, which, thus'prepared, is

nailed centrally upon the face of the heel-seat. In molding the tread-part ofthe heel a circular cavity is formed upon its inner face to receive the circular plate, and of such depth that when the tread-part is screwed upon the heelseat the plate will iit easily in the cavity, and the tread-part and heel-seat, where they come together at their edges, will makea good joint. The circular plate, entering the cavity in the tread-part of the heel, as described, serves to preserve the two parts of the heel in proper position kwith reference to each other, and to support the stud against lateral pressure, as well as the screw by which the two parts of the heel are joined together, the tread-part of the heel bearing and revolving against the edges of the circular plate as well asa-gainst and upon the conical stud.

In a rotary heel in which the new devices and arrangement described in this specification are used, I dispense with the lift, intermediate between the tread-part oi' the heel and the heel-seat, described in my former patent, number 115,581, and the heel is cheaper, and its parts simpliiied and more easily put together and upon the shoe. The circular plate may be' made of a compound of India rubber, like that of which the tread-part of the rotary heel described is made, or other similar material; or it may be made of hard rubber, wood, leather, or other suitable material; but I prefer to make it of sheet-iron, and of the thickness specified, although the thickness is' Description of the Accompanying Drawing.

Figure l is a view of a rotary heel to which my invention relates. Fig. 2 shows the circular plate or disk in its position upcn the face of the heel-seat.77 Fig. Sis a view of the conical stud with the tenon upon its vsmaller end.

Fig. et is a view of the tread-part of the heel,

showing upon its inner face the cavity for the,

Figa-5 is averreception of the circular plate. tical section of the heel through the center, showing all its parts in place.

Claims.

I claim as my invention--k l. I claim the plate of metal or other material fastened upon the heel-seat of aboot or shoe, fitted to the excavation upon the rotary or tread part of said heel, and having a inortise to receive and hold from revolving the fastening-stud uponwhich the said tread-part revolves7 formed as and for the purposes described.

2. I- claim the conical stud upon which the Witnesses: p

HENRY WALKER, WILLIAM STANDISH. 

